1 files changed, 115 insertions, 0 deletions

diff --git a/src/Blocks/BlockLadder.h b/src/Blocks/BlockLadder.h
new file mode 100644
index 000000000..c0aa25f60
--- /dev/null
+++ b/src/Blocks/BlockLadder.h
@@ -0,0 +1,115 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+#include "../World.h"
+
+
+
+
+
+class cBlockLadderHandler :
+	public cBlockHandler
+{
+public:
+	cBlockLadderHandler(BLOCKTYPE a_BlockType)
+		: cBlockHandler(a_BlockType)
+	{
+	}	
+
+
+	virtual bool GetPlacementBlockTypeMeta(
+		cWorld * a_World, cPlayer * a_Player,
+		int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, 
+		int a_CursorX, int a_CursorY, int a_CursorZ,
+		BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
+	) override
+	{
+		if (!LadderCanBePlacedAt(a_World, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace))
+		{
+			a_BlockFace = FindSuitableBlockFace(a_World, a_BlockX, a_BlockY, a_BlockZ);
+			
+			if (a_BlockFace == BLOCK_FACE_BOTTOM)
+			{
+				return false;
+			}
+		}
+
+		a_BlockType = m_BlockType;
+		a_BlockMeta = DirectionToMetaData(a_BlockFace);
+		return true;
+	}
+
+
+	static NIBBLETYPE DirectionToMetaData(char a_Direction)  // tolua_export
+	{  // tolua_export
+		switch (a_Direction)
+		{
+			case 0x2: return 0x2;
+			case 0x3: return 0x3;
+			case 0x4: return 0x4;
+			case 0x5: return 0x5;
+			default:  return 0x2;
+		}
+	}  // tolua_export
+
+
+	static char MetaDataToDirection(NIBBLETYPE a_MetaData)  // tolua_export
+	{														// tolua_export
+		switch (a_MetaData)
+		{
+			case 0x2: return 0x2;
+			case 0x3: return 0x3;
+			case 0x4: return 0x4;
+			case 0x5: return 0x5;
+			default:  return 0x2;
+		}
+	}  // tolua_export
+
+
+	/// Finds a suitable Direction for the Ladder. Returns BLOCK_FACE_BOTTOM on failure
+	static char FindSuitableBlockFace(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
+	{
+		for (int Face = 2; Face <= 5; Face++)
+		{
+			if (LadderCanBePlacedAt(a_World, a_BlockX, a_BlockY, a_BlockZ, Face))
+			{
+				return Face;
+			}
+		}
+		return BLOCK_FACE_BOTTOM;
+	}
+	
+
+	static bool LadderCanBePlacedAt(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace)
+	{
+		if ((a_BlockFace == BLOCK_FACE_BOTTOM) || (a_BlockFace == BLOCK_FACE_TOP))
+		{
+			return false;
+		}
+
+		AddFaceDirection( a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, true);
+
+		return g_BlockIsSolid[a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ)];
+	}
+
+
+	virtual bool CanBeAt(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
+	{
+		// TODO: Use AdjustCoordsByMeta(), then cChunk::UnboundedRelGetBlock() and finally some comparison
+		char BlockFace = MetaDataToDirection(a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
+		int BlockX = a_RelX + a_Chunk.GetPosX() * cChunkDef::Width;
+		int BlockZ = a_RelZ + a_Chunk.GetPosZ() * cChunkDef::Width;
+		return LadderCanBePlacedAt(a_Chunk.GetWorld(), BlockX, a_RelY, BlockZ, BlockFace);
+	}
+
+
+	virtual const char * GetStepSound(void) override
+	{
+		return "step.wood";
+	}
+} ;
+
+
+
+